.TH "QwtCompassMagnetNeedle" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtCompassMagnetNeedle \- A magnet needle for compass widgets\&.  

.SH SYNOPSIS
.br
.PP
.PP
\fC#include <qwt_dial_needle\&.h>\fP
.PP
Inherits \fBQwtDialNeedle\fP\&.
.SS "Public Types"

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.ti -1c
.RI "enum \fBStyle\fP { \fBTriangleStyle\fP, \fBThinStyle\fP }"
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.RI "Style of the needle\&. "
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.SS "Public Member Functions"

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.RI "\fBQwtCompassMagnetNeedle\fP (\fBStyle\fP=\fBTriangleStyle\fP, const QColor &light=Qt::white, const QColor &dark=Qt::red)"
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.RI "Constructor\&. "
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.SS "Protected Member Functions"

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.RI "virtual void \fBdrawNeedle\fP (QPainter *, double length, QPalette::ColorGroup) const override"
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.SH "Detailed Description"
.PP 
A magnet needle for compass widgets\&. 

A magnet needle points to two opposite directions indicating north and south\&.
.PP
The following colors are used:
.IP "\(bu" 2
QPalette::Light
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 Used for pointing south
.IP "\(bu" 2
QPalette::Dark
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 Used for pointing north
.IP "\(bu" 2
QPalette::Base
.br
 Knob (ThinStyle only)
.PP
.PP
\fBSee also\fP
.RS 4
\fBQwtDial\fP, \fBQwtCompass\fP 
.RE
.PP

.PP
Definition at line 127 of file qwt_dial_needle\&.h\&.
.SH "Member Enumeration Documentation"
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.SS "enum \fBQwtCompassMagnetNeedle::Style\fP"

.PP
Style of the needle\&. 
.PP
\fBEnumerator\fP
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.TP
\fB\fITriangleStyle \fP\fP
A needle with a triangular shape\&. 
.TP
\fB\fIThinStyle \fP\fP
A thin needle\&. 
.PP
Definition at line 131 of file qwt_dial_needle\&.h\&.
.SH "Member Function Documentation"
.PP 
.SS "void QwtCompassMagnetNeedle::drawNeedle (QPainter * painter, double length, QPalette::ColorGroup colorGroup) const\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
Draw the needle
.PP
\fBParameters\fP
.RS 4
\fIpainter\fP Painter 
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\fIlength\fP Length of the needle 
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\fIcolorGroup\fP Color group, used for painting 
.RE
.PP

.PP
Implements \fBQwtDialNeedle\fP\&.
.PP
Definition at line 369 of file qwt_dial_needle\&.cpp\&.

.SH "Author"
.PP 
Generated automatically by Doxygen for Qwt User's Guide from the source code\&.
